B&G HS 2000 - True Wind Direction, Tide Set or DR Course Not Functioning Correctly; Two Headings Flashing Alternately

HS 2000 User Manual
Part 6 -Diagnostic Data
HB-0846-03
6-12
6.4.4 Two Headings Flashing Alternately
Symptom: Pilot or Halcyon Displays shows 2 headings flashing
alternately
Possible Causes:
(a) The Pilot has not been set to use the Halcyon 2000
as it’s heading source. See using Halcyon 2000 with a
B&G ACP Pilot. If the Halcyon 2000 is not to be the
source of heading then it must be unplugged from the
network.
6.4.5 True Wind Direction, Tide Set or DR Course Not
Functioning Correctly
(a) The Main Processor has not been set to use the
Halcyon 2000 as the heading source. Set
NAVIGATE? COURSE, CAL VAL 1 (HDG NODE) to 16.